Which change is most likely to occur when a molecule of h2 and a molecule of i2 collide with proper orientation and sufficient energy? 1. a chemical change, because a compound is formed 2. a chemical change, because an element is formed 3. a physical change, because a compound is formed 4. a physical change, because an element is formed
Answers: 2
and a molecule of 
collide with proper orientation and sufficient energy then the chemical changes occurs due to the formation of the new compound.
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